Improvement in window-mirrors



J. VAN DeLINDE.

- WINDOW Mxrmon.` N o.181,806. Patented Sept.5,1876.

.dit orneyr N.PETERS. PHOTO-LITHOGRAPNER. WASHINGTON. Dv 6.

NITED STATES PATENT OFFICE.

JAN VAN DE LINDE, OF GRAND RAPIDS, MICHIGAN.

IMPROVEMENT IN WINDOW-MIRRORS.

Specification forming part of Letters Patent No. 181,806, dated September 5, 1876; application ilod June 24, 1876.

full, clear, and exact description thereof, which I will enable others skilled in the art to which it appertains to make and use the same, ret'- erence being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

My invention relates to window-mirrors, and consists of two suitably-framed glasses revolving on a common spindle, and rendered adjustable in their angular inclinations by curved slotted plates acting in connection with a thumb-clamp.

In the drawings, Figure 1 represents my device in full, while Fig. 2 is a detail of the clamping mechanism.

A is a bracket ot` suitable proportion and design, having at its extremity, farthest from the supporting side, the vertical spindle B secured thereto, either cast in the same piece, or engaging therewith, so as to firmly hold the spindle in position. Upon this spindle, as their axis, revolve the strap-hinges C, which latter are constructed with the outer extremities otl their leaves secured to the rear of the glass frame, while their knuckles embrace the spindle as the common center or supportingpin about which they rotate. rlwo of these hinges serve to swing each glass, one respectively at the top and bottom of each of the glasses. To the top of the glass frames are respectively secured at their outer extremities the circular plates D, one to each glass, which plates, at their inner extremities, are provided with slots d running parallel to said plates. These circular plates engage with the spindle B by same passing through their slots drand are secured in any determinate position by the thumb-clamp E screwed onto the threaded upper end of the spindle. A collar, b, forms an under bearing for these circular plates, which are compressed intermediate said collar and the clamp E, whereby as the latter is screwed down the plates are held fixed. The glasses F may be of such dimensions as desired, and are suitably framed in protecting casingsf.

The operation is as follows: Tile device being secured by means of the bracket to the casing or other appropriate part ot' the window, from within which it is desired to look up and down the street, either or both of the mirrors may be set at any appropriate angle, and there firmly held by operating the clamping mechanism. The angle of forty-live degrees isa very fair one in which to see the length of the street, and it will be observed that the view also includes the sidewalk near'- est the house even when the mirror is attached .to an upper story window.

By the foregoing described device a person, while not exposing any portion 4of their body outside the window, may enjoy a full view of objects'without, and which otherwise would require a projection beyond the window.

Having fully described my invention, what I claim as new, and desire to secure by Let ters Patent, is-

l. The duplex window-mirror, consisting of two glasses angularly adjustable on a common spindle supported by a projecting bracket, in combination with the two slotted circular plates and clamping mechanism, substantially as and for the purpose described.

2. The circular plates and supporting-spindle, in combination with the bearing-collar and thumb-clamp, substantially as and for the purpose described.

In testimony that I claim vthe foregoing as my own I athx my signature in presence of two witnesses.

JAN VAN DE LINDE.

Witnesses:

WM. O. WEsTFALL, F. RAYNsFoRD. 

